7221699 has 12 divisors (see below), whose sum is σ = 10686312. Its totient is φ = 4696800.

The previous prime is 7221689. The next prime is 7221707. The reversal of 7221699 is 9961227.

7221699 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7221699 - 2¹² = 7217603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7221619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9417 + ... + 10154.

It is an arithmetic number, because the mean of its divisors is an integer number (890526).

Almost surely, 2^7221699 is an apocalyptic number.

7221699 is a deficient number, since it is larger than the sum of its proper divisors (3464613).

7221699 is a wasteful number, since it uses less digits than its factorization.

7221699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19618 (or 19615 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 7221699 is about 2687.3219010755. The cubic root of 7221699 is about 193.2916652836.

The spelling of 7221699 in words is "seven million, two hundred twenty-one thousand, six hundred ninety-nine".